Neoprene vs. Grafoil gaskets yekupisa-kupisa kwemhepo? 

Zvakanaka, ngatichekei neruzha. Kana iwe uchitsvaga izvi, iwe ungangove wakatarisa kune inovuza flange kana kuronga kuvaka uye izvo zvinotsanangurwa zvinongoti high-temp gasket. Musungo mukuru unowira munhu wese mauri kufunga kuti rubber uye kutonhora kwakanyanya kunogona kuenda pamwe kwenguva refu. Havagoni. Neoprene inokandwa kutenderedza basa rekuneta dzimwe nguva, asi izvo zvinowanzo gadzirisa nekukurumidza kunanga kukundikana. Grafoil? Ndiro rimwe zita raunonzwa. Asi hazvisi nyore kana-kana. Zviri pamusoro pekuti unozvishandisa kupi uye sei, uye nokutendeseka, dzimwe nguva haufanirwe kushandisa.

Iyo Neoprene Illusion muHot Systems

Ini ndinofanira kunge ndakagomara: kushandisa standard neoprene gatsiti pane yechokwadi yepamusoro-tembiricha kupera kuri kubvunza dambudziko. Tiri kutaura pamusoro pezvinhu zvaungashandisa kupinza mhepo kana mutsara unotonhorera. Runako rwayo kuchinjika uye chisimbiso, yakanaka kune zvisina kujairika nzvimbo pakamuri temp. Asi kuneta? Kunyangwe sisitimu ine mwero inorova 250°C (482°F) zviri nyore, uye neoprene inotanga kuoma nekutsemuka kutenderedza 120-130°C. ndazviona. Iwe unoidonhedza pasi pane turbo downpipe, inosimbisa yakanaka pakutanga kwekutanga. Vhiki gare gare, mushure memazuva mashoma ekupisa, inoshandurwa kuita brittle, yakasviba disc. Chisimbiso chaenda, iwe unowana iyo iticking exhaust leak, uye iwe wadzoka pasi pemotokari.

Pane caveat: mamwe emhando yepamusoro-temp neoprene musanganiswa aripo, kazhinji ane silicone, akayerwa kumusoro. Asi muruzivo rwangu, kunyangwe idzi dzine sirin'i. Vanogona kurarama mujoini remuffler kana muchikamu chepombi apo kutonhora kwakadzikira, toti sub-200°C. Asi kune misoro, kumusoro-mapombi, turbo manifolds - kanganwa nezvazvo. The thermal degradation inguva, kwete kana. Mutengo we gasket wakaderera, asi mari yebasa rekuita basa kaviri yakakwirira.

Ndekupi kwandakapedzisira kuona neoprene gasket ichikundikana zvinoshamisa? Mota yeshamwari yekutevera ine tsika inopedza simba. Akashandisa neoprene donut gasket pane v-band clamp padyo nekatsi, achifunga kuti clamp load yaizoibata. Zvakadaro, kwezvikamu zviviri. Kupisa kwaiita kuti zvinhu zviyerere nekumanikidzana zvisina kuenzana, zvichiita kuti pave nekuputika uye kubuda kwakashata musangano usati watanga. Isu takachichinjanisa kune chaiyo simbi gasket panzvimbo. Chidzidzo: ndangariro yezvinhu zvinokosha. Neoprene inorasikirwa nayo kana yakabikwa.

Grafoil: The Go-To, Asi With Gripes

Grafoil gaskets, kana kuti zvakanyanya, flexible graphite gaskets, ndiyo mhinduro yekusagadzikana kwechikonzero. Ivo vanobata tembiricha zvinoyevedza-tiri kutaura sevhisi inoenderera kusvika 450-500°C mumhepo isiri-oxidizing, kunyangwe nzvimbo dzakakwirira. Zvinoenderana nekusakwana kweflange, inova kuponesa kune yekare, yakamonyoroka zvishoma. Unoisungirira pasi, inotsveta uye inozadza mipata isingaoneki. Ndiro simba ravo chairo.

Asi vane madhimoni avo. Kutanga kuzorora kunokambaira, kana kuyerera kunotonhora. Nekufamba kwenguva, kunyanya pasi pemutoro wakakwira uye kupisa, iyo graphite inogona zvishoma nezvishoma kumanikidza uye kuonda kunze. Kana mabhaudhi ako asiri torque-ku-goho kana iwe usina mawashi echirimo, simba rekusunga rinodonha, uye unowana kudonha. Ini ndinogara ndichikurudzira retorque mushure mekutanga mashoma ekudziya kutenderera kana zvichibvira. Chechipiri, uye izvi zvakakosha: havadi zvakananga, high-velocity eposta gasi kupinza. Iyo graphite inogona kupeperetswa kunze kana paine gaka rakakura kana kusarongeka. Ndinogara ndichitarisa zviso zveflange kuti zvienderane ndisati ndaisa.

Imwe nyaya iri kubata. Girafu rakachena rakapfava. Kana iwe uchiisa grafoil gasket pane yakatwasuka kana pamusoro flange, zvinogona kurwadza kuti urambe uri panzvimbo iwe uchitanga mabhaudhi. Vamwe vanouya nesimbi ine perforated core kana tacky adhesive backings, iyo inobatsira. Idzo dzine simbi isina tsvina dzakasimba zvakanyanya asi dzisingaenderani. Iko kutengeserana.

Oxidation uye iyo Yakakanganwa Factor

Heino tsanangudzo yakawanda inopotsa: oxidation. Mumvura inoyerera ine okisijeni yakawanda, graphite inogona oxidize zvishoma nezvishoma pamusoro pe400 ° C, kunyanya kumacheto. Inoshanduka kuita dota rehupfu, kuonda gasket. Izvi hazviwanzo kutadza kunotyisa pamotokari yemumugwagwa, asi pane yakaramba yakatakura-mutoro application-funga jenareta rinomhanya zvakakwana kwemazuva-chinogona kuve chinhu chakapfekwa. Ndakadhonza magrafoil gaskets kubva kuturbo housings anga akaonda zvakanyanya pamucheto unopisa wemukati. Kune aya akanyanya makwapa, akaturikidzana simbi gasket inogona kunge iri nani.

Kana Pasina Mhinduro Yakarurama

Apa ndipo panotanga chiitiko chaicho. Pane zviitiko apo zvese neoprene negrafoil isarudzo dzisina kunaka. Imwe ndeyekunyanya kupisa-tembiricha, high-pressure majoini, kunge pakati peturbocharger imba uye manifold. Pano, multi-layer simbi (MLS) gaskets ari mambo. Havakwenye, vanobata bhasikoro rinopisa zvine hunyoro, uye vanoramba kuputika-kunze.

Imwe ndeye maflange ane mapeji makuru kana kuti asina kunaka flatness. Hapana kana chinhu chinozadza gap. Neoprene ichawedzera uye inokundikana; grafoil inoputika kana kupwanya zvisina kufanana. Iyo gadziriso ndeyemuchina iyo flange kana kushandisa yakakora, inotsiga zvinhu senge ceramic-yakasimbiswa composite. Ndakadzidza izvi nenzira yakaoma pane yeindasitiri boiler exhaust damper. Takaedza gobvu grafoil sheet, asi iyo flange warpage yaive pamusoro pe1mm. Yakabva yadeuka ipapo. Mushonga wacho waiva wokumutsiridza flange uye kushandisa marata gasket ane graphite filler—mushonga wakagadzirwa nounyanzvi.

Dzimwe nguva, mhinduro haisi gasket zvachose. Yakagadzirwa zvakanaka, yakapfava, uye yakatsetseka simbi-kune-simbi majoini ane yakakwirira-tembiricha anti-kubata kana sealant (seyakananganamira yemhangura) inogona kuvimbika kune mamwe V-bhendi kana flat-face yekubatanidza, kubvisa iyo isina kusimba link yechinhu chinomisikika zvachose.

Kutsvaga uye Zvinoshanda Chokwadi

Unogona kutenga aya gaskets chero kupi, asi mhando inosiyana zvakasiyana. Grafoil yakachipa inogona kuva netsvina kana kusagadzikana density, zvichitungamira kunzvimbo dzinopisa uye kukundikana. Zvemaapplication akakosha, ini ndinonamatira nemhando dzinozivikanwa kana vatengesi vanopa zvinhu zvakatemwa. Izvo zvakakoshawo kutarisa iyo fastener system sechikamu chekugadzirisa chisimbiso. Bhaudhi isina kusimba inotambanuka nekupisa inotyora chisungiso. Ndosaka kubasa rekupedza simba, ini ndinowanzo tora Hardware kubva kunyanzvi dzinonzwisisa zvinodikanwa zvekupisa, senge Handan Zitai Fastener Kugadzira Co, Ltd.. Ivo vanogara muYongnian, iyo inomhanyisa hub yeChina, uye inopa yakawanda indasitiri. Kuziva mabhoti ako uye zvitubu zvinobva kune hombe yekugadzira base ine yakasimba kudzora, inowanikwa kuburikidza nesaiti yavo pa https://www.zitafornasteers.com, zvinoreva imwe shoma shoma yekunetsekana nayo kana gungano rose richidziya uye kutonhora kakawanda.

Pauriri hwechitoro, mutemo wangu wegunwe ndeuyu: kune mazhinji emumugwagwa epoust anoshanda post-catalyst uko tempera iri pakati nepakati (pasi pe350 ° C), yemhando yegrafoil gasket yakanaka kwazvo. Ingoiisa panzvimbo yakachena, yakati sandara uye retorque. Kune pre-catalyst, turbo, kana header application, ndinosendamira kune yakaturikidzana simbi kana yakasimba simbi gaskets. Neoprene? Ndinoichengetera madhakisi ekudya, zvivharo, uye chero chinhu chinoramba chichitonhorera. Izvo ndezvekufananidza chokwadi chezvinyorwa kune hutsinye hwehurongwa. Exhaust kupisa hakukanganisi.

Yekupedzisira Tora: Ihurongwa, Kwete Chete Chikamu

Saka, neoprene vs. grafoil? Haisi kunyatsopesana. Iwo maturusi emabasa akasiyana. Neoprene ndeye yakaderera-temp, static chisimbiso. Grafoil ndeye conformable, high-tem sealing uko mamiriro asina kunyanyisa. Iyo chaiyo nyanzvi yekufamba ndeyekuongorora iyo yese yakabatana: tembiricha chimiro, flange mamiriro, bolt mhando, uye kupisa bhasikoro. Ndakatambisa nguva nemari ndichipa mhosva gasket zvinhu apo dambudziko raive rakamonyoroka flange kana kusakwana simba rekusunga.

Zano rangu? Usangosarudza zvichibva pakurudziro yegeneric. Funga nezvenzvimbo chaiyo muhova yepombi, tembiricha yepamusoro yaichaona, uye mhedzisiro yekudonha. Dzimwe nguva, kushandisa zvakapetwa katatu pane premium multi-layer metal gasket kune yakakosha turbo flange ndiyo yakachipa sarudzo mukufamba kwenguva nekuti unongoita basa kamwe chete. Uye nguva dzose, gara uchitanga neyakanaka, yakati sandara uye zvisungo zvekupisa. Zvimwe zvese zvinovaka panheyo iyoyo.